Steam-engine



(No Model.)

W. GEIB'.

STEAM ENGINE.

No. 404,190. I Patented May 28, 1889.

Miness'es.

UNITED STATES PATENT OFFICE.

WILLIAM GEIB, OF KALAMAZOO, MICHIGAN.

STEAM-ENGINE.

SPECIFICATION forming part of Letters Patent No. 404,190, dated May 28, 1889.

Application filed October 10, 1887. Serial No. 251,880. (No model.)

To aZZ whom it may concern.-

Be it known that 1, WILLIAM GEIB, a citizen of the United States, residing at Kalamazoo, county of Kalamazoo, State of Michigan, have invented a new and useful Steam- Engine, of which the following is a specification.

This invention relates to that class of steamengines which employ a sector-shaped cylinder and a curved piston-rod bearing a pistonhead; and it has for its object the improvements substantially as below described and claimed.

In the drawings, forming a part of this specification, Figure 1 is a side elevation, with parts broken away. Fig. 2 is a plan of lettered details in Fig. 1, enlarged; and Fig. 3 is an enlarged elevation of the steam-chest in Fig. 1, with one wall removed, showing the valve and ports.

Referring to the lettered parts of the drawings, A is the base having upwardly-extending standards F, in which the shaft i, which bears the balance-wheel E, has bearings in the ordinary manner. The sector-shaped cylinder B is supported on a raised portion of the base A, Fig. 1.

At his an oscillating shaft, also having bearings in this raised portion of the base A, and upon said shaft 19 an oscillating wheel, 0, is mounted.

At f is the valve-rod or pitman pivotally attached to the crank g of the valve at the narrow end of the cylinder. The bowed or curved piston, segmental in form, is shown at a extending at each end out of the cylinder B and bearing at its longitudinal center the piston-head u. (Shown in Fig. 3 and by dotted lines in Fig. 1.) The interior of the cylinder B is shown in Fig. 3.

Each end of the piston-rod a is provided with a rigidly-attached arm, 0, said arms being in a radial posit-i011 or angle in relation to the shaft b on the center of the wheel 0. The free end of these arms 0 is pivotally at tached to the periphery or rim of the wheel 0. The connecting -rod D is also pivotally attached at one end to the periphery or rim of the wheel 0, as in Fig. 1. For convenience, the wheel is re-enforced and slotted at e, and a box, (Z, is placed in said slot, to which box the end of the connecting-rod D (said end being forked to straddle the rim of the wheel 0) is pivoted, and to which box the end of one of the arms 0 is pivoted as well. arms 0 are also forked at the end to straddle the rim of the wheel 0. By this means the connecting-rod D is caused to make a stroke of greater distance than the movement of the piston-rod and a greater leverage is had upon the connecting-rod than would be the case if it were attached directly to the end of the piston-rod.

The relation of the induction and eduction ports, the valve, and the operation of the piston will be readily understood by reference to Fig. 3, in which the valve, which is operated by crank g and rod f, is shown at '0.

team enters the steam-chest n occupied by the valve 41, through the port S. With this port a supply-pipe from the boiler connects on the opposite side of the steam-chest of the cylinder B. The supply-pipe and boiler are not here shown. In Fig. 3 steam is supposed to be entering the cylinder B at the upper side through port r and exhausting at the lower side through the exhaust-port rm. When the piston reaches the lower side of the cylinder B, the valve will oscillate in the ordinary manner by means of the eccentric "6, rod f, and crank g, so that steam will enter the cylinder through port 0" and exhaust through port r during the upward movement of the piston u.

Having thus described my invention, what I claim is- In a steam-engine, the combination of the oscillating shaft, the oscillating wheel rigidly mounted on said shaft, the curved stationary cylinder, the piston-rod projecting out of each end of the cylinder and curved on a plane smaller than the rim of said wheel, the two radial arms, one attached rigidly to each end of said piston-rod, the free ends of said arms being pivotally attached to the rim of the oscillating wheel at points diametrically opposite each other a cranked power-shaft, and a connecting-rod pivotally attached at one end to the rim of said wheel and to the crank of the power-shaft at the other end, substantially as set forth.

In testimony of the foregoing I have hereunto subscribed my name in presence of two witnesses.

\VILLIAM GEI-B.

\Vitnesses:

Gno. D. B. HALL, CHAs. FRIEDMAN.

The 

